The bias is found here...
All this is definitely true. The bias is that "all of a sudden" there is a massive migration due to natural causes. There has always been earthquakes, droughts and hurricanes destroying whole communities. There has always been migration due to these causes. It would like saying "Today, India has migration because of monsoons" -- when it is a common occurrence.
Those people have always made adjustments and migrations after these situations.
An unbiased position would be, "Climate catastrophes have increased migration by 10%" or "United States open borders increased migration after disasters by 30%" instead of relegating it all to Climate Change
Or, "The Venezuelan diictatorship increased Venezuelan migration in October than all of the year of 2020"
More Venezuelan migrants crossed into U.S. in October than in all of 2020 and things like these.
But to relegate it all about climate as if it is a new thing is biased at its core IMO